carl seyersdahl wrote: > > One more comment here, Please?? I turned the amp on and noted that the > plate(anode to the new generation) turned a little red, indicating that the > plate (anode) is drawing current !! ( maybe too much??) I had these symptoms in a friend's AL80B. The problem was a grid-filament short which showed up only when the tube was hot. Try a new tube. Vic K2VCO Fresno CA